Wrench



E: M. GAZLAY.

. WRENCH. APPLICATION FILED FEB. 5. 1921-. nENEwEn MAY 25, 1922.

1,438,641. v Patnted Dec. 12, 1922.

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attorney Patented Dec. 12, 1922-.

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Application filed February 5, 1921', Serial No. 4 12,

To all whom it may concern Be it known that I, EUGENE M. GAZLAY, a citizen of the United States, residing at Sidnaw, in the county of Houghton, State of ll Iichigan, have invented certain new and useful Improvements in Wrenches; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. f

This invention relates to new and useful improvements in wrenches and particularly to sliding jaw wrenches.

One object of the invention is to provide a wrench wherein the sliding jaw is capable of quick and easy movement into positionto cooperate with the stationary jaw, but which requires the manipulation of a detent to permit movement of the jaw out of gripping position.

Another object is to provide an improved form of supporting means for the jaw locking means.

Other objects and advantages will be ap parent from the following description when taken in connection with the accompanying, drawing.

In the drawing:

Figure 1 is a side elevation of a wrench made in accordance with the invention.

Figure 2 is a transverse sectional view taken on the line 2-2 of Figure 1, through the shank rearwardly of the pivoted detent.

Figure 3 is a vertical longitudinal central sectional view taken on the line 38 of Fig ure 2.

Referring particularly to the accompanying drawing, 10 represents a shank having the hand grip 11 on one end and the rigid or stationary jaw 12 on its other end. Slidably disposed on the shank, in embracing relation thereto, is a casing or sleeve 13, on which is carriedthe movable jaw 14. On one edge face of the shank are formed the longitudinal series of transverse teeth 15, with which meshes the teeth of a gear 16, rotatably supported within the end of the sleeve 13. This gear is so mounted in the sleeve as to remain in constant mesh with the teeth of the shank, at all times. Projecting from the outer portion ofthe inner or rear end of the sleeve 13 is a lug 17, and straddling this lug, and pivotally supported thereon, is a yoke 18. Rotatably supported by, and disposed between the outer endsof Renewed May 25, 1922. 561mm. 553,673.

the legs orarms ofthe yoke 18, is agear 19 which also meshes with the teeth of the shank. A bowed spring 20 is secured to the inner face of the lug 17, and extends rearwardly and toward the adjacent edge face of the shank, around the gear 19. The tendency of this spring is to swing the yoke so that the gear 19 meshes with the teeth of the shank, and with the teeth of the other gear 16, at the same time. By reason of the fact that, when the attempt is made to move the sleeve in a direction away from the rigid 12, the spring 20 holds the gear 19 in mesh with the rack of the shank and with the gear 16, thus preventing rotation of either gear. Also, by reason of the fact that, when the gears 16 and 19 are in mesh, they must rotate in opposite directions, if one or the other remains in mesh with the rack of the shank, this is prevented by the fact that the other gear is in mesh with the rack and its tendency is to rotate in the same direction with the first gean To permit movement of the sleeve toward the jaw 12, it is necessary to grasp the bight portion of the yoke 18 and rock the yoke in a direction away from the adjacent end of the sleeve 13, with the result that the gear 19 will be swung out 'of mesh with the gear 16. Both gears will then rotate freely in their engagement with the teeth of the shank. Release of the yoke,.will permit the spring to restore the engagement of the gears 16 and 19, and the locking of the sleeve against any further movement in a direction away from jaw 12. p Thesleeve may be readily and easily moved toward the jaw 12, by a slight pressure, this movement resulting in the dragand the rocking of the yoke against the force of the spring, to move the gear 19 out of mesh with the gear 16. Thus, to move the sliding jaw toward the stationary jaw to grip the work, very little pressure is necessary. l

It will be noted. that both. gears 16 and 19 remain in mesh with the teeth of the shank,

whether they engage with each other or 95 ging of the gear 19 on the teeth of the shank,

What is claimed is: and bearing againstthesecondmamed gear A Wrench including a toothed shank, a to yieldab'ly hold thesame in mesh with the sliding sleeve mounted on the shank, a gear first-named gear and the teeth of the shank. mounted Within the sleeve and in constant In testimony whereof, I affix mysignatnre, Ines? Wit? the teeth of the shank, a llug eX- in the presence of tWo Witnesses. tenringz' mm the sleeve, a U-sha ec yoke 7 having its legs straddling the ing and EUGENE GAZLAXQ pivoted thereto, a second gear rotatably Witnesses: mounted vbetween the free ends of the legs H. A. LIN UIsT, 10 of the yoke, and a spring secured to the lug H. L. KIRTLA'ND. 

